That the Klebs-Loeffler bacillus may produce cutaneous eruptions is well known. Dermatitis diphtheritica may be primary, or, which is usual, may result from contamination from mucous membrane lesions. These secondary eruptions were, until the introduction and wide spread use of diphtheria antitoxin, not uncommon. On the other hand, primary cutaneous diphtheria is either very rare or, because not very often diagnosed, commoner than is generally thought. This undoubt